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土壤养分空间变异性的随机模拟及其应用
引用本文:陈翠英,江永真.土壤养分空间变异性的随机模拟及其应用[J].农业机械学报,2006,37(12):67-70,95.
作者姓名:陈翠英  江永真
作者单位:江苏大学江苏省现代农业装备与技术重点实验室 212013 镇江市
摘    要:把随机模拟技术引入土壤养分的空间变异性研究中,对土壤养分空间分布的不确定性进行描述。将随机模拟值与克里格插值及实测值进行对比分析。利用一系列随机模拟值计算出空间某点处土壤养分特性值不超过(或者超过)某个临界值的概率,可以对依据插值结果作出的施肥决策给予评价。

关 键 词:土壤  养分  空间变异  克里格插值  随机模拟
收稿时间:12 30 2005 12:00AM
修稿时间:2005-12-30

Stochastic Simulation of Spatial Variability of Soil Nutrient Property and Its Application
Chen Cuiying,Jiang Yongzhen.Stochastic Simulation of Spatial Variability of Soil Nutrient Property and Its Application[J].Transactions of the Chinese Society of Agricultural Machinery,2006,37(12):67-70,95.
Authors:Chen Cuiying  Jiang Yongzhen
Institution:Jiangsu University
Abstract:Precision farming originated from the realization of the tempo-spatial diversity of farmland status. Its main goal is to adopt individual management according to field diversities, reach optimization, and improve efficiency and benefits. Generally, Kriging is used to describe the spatial variability of soil nutrient property, but it has uncertainty. Therefore decision-making that follows Kriging to construct fertilization also has certain risks. The stochastic simulation technique was introduced into the research of spatial diversity of soil nutrient property, and to depict the uncertainty of soil nutrient property, and present a series of simulation values of equal probability. After calculating the probability of no higher than (or higher than) some critical values by using stochastic simulation, it was possible to assess the risk of fertilization decision-making.
Keywords:Soil  Nutrient  Spatial diversity  Kriging  Stochastic simulation
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